147806820 has 72 divisors (see below), whose sum is σ = 512401344. Its totient is φ = 33784128.

The previous prime is 147806819. The next prime is 147806851. The reversal of 147806820 is 28608741.

147806820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57394 + ... + 59913.

Almost surely, 2^147806820 is an apocalyptic number.

147806820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147806820 is an abundant number, since it is smaller than the sum of its proper divisors (364594524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

147806820 is a wasteful number, since it uses less digits than its factorization.

147806820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117329 (or 117324 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 147806820 is about 12157.5828189653. The cubic root of 147806820 is about 528.7270030070.

The spelling of 147806820 in words is "one hundred forty-seven million, eight hundred six thousand, eight hundred twenty".